方法：测定破伤风类毒素聚乳酸微球免疫动物后1年中动物血清抗体反应及疫苗制剂的生物利用度。
Methods: The antibody levels elicited by microsphere formulations in mice for 1 year were examined, and the bioavailability of microsphere formulations was calculated.
方法：测定破伤风类毒素聚乳酸微球免疫动物后1年中动物血清抗体反应及疫苗制剂的生物利用度。
Methods: The antibody levels elicited by microsphere formulations in mice for 1 year were examined, and the bioavailability of microsphere formulations was calculated.
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